福壽螺的天敵 - 社會議題
By Vanessa
at 2009-07-20T00:00
at 2009-07-20T00:00
Table of Contents
目前防治福壽螺的方式只有施用農藥.那福壽螺是否有天敵?而減少農藥的施用量.
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社會議題
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By Rachel
at 2009-07-23T23:28
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